Obs. : 2009-05-14
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.640e+11
Venus      3.472e+11
Earth      3.551e+11
Mars       3.472e+11
Jupiter    3.333e+11
Saturn     3.775e+11
Uranus     3.397e+11
Neptune    3.333e+11
Pluto      3.472e+11